Li-Yun's Training: Endurance (Patreon)

i was stricken with a devious need for very specific content so have Ms. Yun putting her beloved student through some training. Despite her age, Li-Yun is extremely energetic making living with her very taxing if you have her fancy. 

The student has endured such lessons numerous times up until now, barely being able to stand one Ms. Yun is done with him. Little does he know that his stamina grows exponentially with each lesson. ow o